Synonyms for lonely

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1. Without company

   forlorn, lonesome, solitary, lone, alone, abandoned, comfortless, forsaken, friendless, deserted, desolate, homeless, bereft, companionless, withdrawn, secluded, unattended, by oneself, empty, apart, unsocial, reclusive, anchoritic, troglodytic, single, lorn, rejected, unaccompanied, unbefriended, disconsolate, uncherished, unwanted, outcast, alienated, lonely-hearts; see also homesick.

   Antonyms accompanied, associated, social.

2. Inaccessible or unfrequented

   remote, desolate, unfrequented, uninhabited; see isolated. See syn. study at alone.